Month: July 2015

To celebrate 40 years of North Sea Jazz Festival, the Dutch broadcaster NTR showed a programme on the NPO3 channel on 5 July at 23:00 which highlighted recent and classic concerts from the rich history of the festival.

One of the very special classic concerts was the Archie Shepp Quartet with Johnny Meijer on jazz accordion in 1981. As became apparent, saxophonist Hans Dulfer had brought Shepp and Meijer together and it had been the only time they had played together. In 1981 I visited the North Sea Jazz festival for the first time and, being a big fan of Archie Shepp, I had been present during this remarkable concert and taken photos.

A few days before the taping of the program I was approached by the team behind the programme to confirm that it was my photo and asking permission whether they could use the photo. I could supply them with a high-res version of the image and allowed them to use the photo if they could give me full credit. I can image that not many photos of this event are still around 34 years after the fact and I was happy to oblige. They generously left my photo and my name up for the duration they discussed this concert with Hans Dulfer which impressed my family. 🙂

Now that ADOX CHS 100 II film is available on 120 format (as well as on 135 format and many, many different sizes of sheet film) it is getting really interesting. I have used a lot of ADOX CHS 100 ART on 120 format and loved the results and ADOX CHS 100 II film is said to be just as good. As a medium and large format shooter, I’m really happy that this film is now available in all formats. ADOX provided a technical sheet for this film here, but crucially, the reciprocity failure correction information was missing. I emailed them, and they kindly obliged and provided me with the following information. I have not been able to verify any of this, I hope that you can let me know how you got on with the information below; it will certainly be a good start:

Up to 1 second, no correction required.

2 seconds: 1.5x (3 seconds)

4 seconds: 2x ( 8 seconds)

8 seconds: 2.5x (20 seconds)

15 seconds: 3x (45 seconds)

30 seconds: 4x (120 seconds)

60 seconds: 6.5x (6 minutes 30 seconds

In a graph it looks like follows (time metered on the horizontal axis versus the required exposure time on the vertical axis):

See also Howard Bond’s article on reciprocity departure for a really good article on the subject which is also referred to as the Schwarzschild effect.